Do you need a passport if I'm American and flying from the TJ airport ?

With your passport card you will be fine, my friend uses his card and he is fine.you don't need the book passport.

Yes you need your passport

Yes, or a passport card. I have heard a birth certificate will work but crossing an international border usually requires a passport.

liliana Grijalva its rigth I fo pass with out it

Passport is required check CBX website...

Dont forget your passport you will need it.

Yes u need

On most but I know my son drove into tj and was able to fly without a passport 1 just don't know which airline

Yes

You will also need to get a visa guest form